<template>
  <div class="child2">
    <h3>子组件2</h3>
    <h4>电脑：{{computer}}</h4>
    <h4>哥哥给的玩具：{{toy}}</h4>
  </div>
</template>

<script setup lang="ts" name="Child2">
import {onUnmounted, ref} from "vue";
  import emitter from "@/utils/emitter";
  //数据
  let computer = ref('联想')
  let toy = ref('')

  //给emitter绑定send-toy事件
  emitter.on('send-toy',(value:string) => {
    toy.value = value
  })

  onUnmounted(() => {
    emitter.off('send-toy')
  })
</script>

<style scoped>
	.child2{
		margin-top: 50px;
		background-color: orange;
		padding: 10px;
		box-shadow: 0 0 10px black;
		border-radius: 10px;
	}
</style>